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Chemical Sampling Information (CSI)
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General Description

Synonyms: Carbamaldehyde; Methanamide

OSHA IMIS Code Number: 1292

Chemical Abstracts Service (CAS) Registry Number: 75-12-7

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: LQ0525000; 36181

Chemical Description and Physical Properties:

molecular weight: 45.05
molecular formula: CH3NO
boiling point: 200°-212°C
flash point: 154°C

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 10 ppm, 18 mg/m3 TWA (Skin)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 10 ppm TWA (Skin)

Health Factors

Health Effects: Cumulative systemic toxicity (HE3); Suspect Reproductive Effects + (HE5) Irritation-Eyes, Skin---Mild (HE16)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Silica Gel Tube (150/75 mg sections, 20/40 mesh)
    analytical solvent: Methanol
    maximum volume: 10 Liters
    maximum flow rate: 0.1 L/min (TWA)
    maximum volume: 1.5 Liters
    maximum flow rate: 0.1 L/min (STEL)
    current analytical method: Gas Chromatography; GC/FID
    method reference: 2 (OSHA In-House File)
    method classification: Partially Validated

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